Answer:
Protists are eukaryotic organisms that can be unicellular, colonial, or multicellular. They are called Archaea, a separate kingdom (even a separate domain). Almost everywhere like earth's crust, organic matters, water bodies, bodies humans and animals and so on. Archaea inhabit nearly every environment on earth, but no archaea have been identified as human pathogens. Unicellular: Archaebacteria, Eubacteria and Protista.
Explanation:
Answer: Ribose nucleotides and the nitrogenous bases
Explanation: RNA consists of ribose nucleotides (nitrogenous bases appended to a ribose sugar) attached by phosphodiester bonds, forming strands of varying lengths. The nitrogenous bases in RNA are adenine, guanine, cytosine, and uracil, which replaces thymine in DNA.
A water molecule, because of its shape, is a polar molecule. That is, it has one side that is positively charged and one side that is negatively charged. The molecule is made up of two hydrogen atoms and one oxygen atom. The bonds between the atoms are called covalent bonds, because the atoms share electrons.
Analogies are the result of convergent evolution. Interestingly, though bird and bat wings are analogous as wings, as forelimbs they are homologous. Birds and bats did not inherit wings from a common ancestor with wings, but they did inherit forelimbs from a common ancestor with forelimbs.
